| Patent Number |
Title Of Patent |
Date Issued |
| T998010 |
Process for removal of sulfur dioxide from gases |
September 2, 1980 |
| An improvement is provided in the regeneration system of agueous regenerative processes for the removal of SO.sub.2 from SO.sub.2 -containing gas streams which have a scrubbing system containing (1) a scrubbing zone through which a recirculating stream of sodium, potassium or ammoniu |
| T989004 |
Hydrogen transfer solvent extraction of coal |
December 4, 1979 |
| A coal liquefaction process is provided in which a hydrogen donor solvent is used in the liquefaction of the coal. The process is designed to maintain the hydrogen donor solvent in balance by hydrogenation of the spent hydrogen donor solvent and selected precursors of the hydrogen donor |
| T989003 |
Solvent makeup in solvent extraction of coal |
December 4, 1979 |
| A coal liquefaction process is provided in which a hydrogen donor solvent is used to at least partially liquefy the coal. The process is maintained in hydrogen donor solvent balance by treatment of selected products obtained in the course of the coal liquefaction process. The required |
| T989002 |
Solvent makeup in hydrogen transfer extraction |
December 4, 1979 |
| A coal liquefaction process is provided in which a hydrogen donor solvent is used in the liquefaction of the coal. The process is designed to maintain the hydrogen donor solvent in balance by hydrogenation of the spent hydrogen donor solvent and precursors of the hydrogen donor solvent |
| T989001 |
Hydrogen donor solvent extraction of coal |
December 4, 1979 |
| A coal liquefaction process is provided in which a hydrogen donor solvent is used to at least partially liquefy the coal. The process is maintained in hydrogen donor solvent balance by treatment of products obtained in the course of the coal liquefaction process. The required balance is |
| 4578175 |
Combined process for coal pyrolysis and char gasification |
March 25, 1986 |
| Finely divided coal is reacted in a combination of processes comprising flash pyrolysis and fluidized bed gasification of char from the pyrolysis. A portion of the char which is heated by the steam-oxygen gasification provides the heat for the pyrolysis step, which can be controlled to |
| 4440546 |
Process for gasification of carbonaceous material |
April 3, 1984 |
| A process of tar destruction in gasification of carbonaceous material comprising providing a mixture of finely divided calcium compound of a particle size smaller than 65 mesh and finely divided carbonaceous material of a particle size smaller than 65 mesh, the calcium compound to ca |
| 4330430 |
Method for producing and regenerating a synthetic CO.sub.2 acceptor |
May 18, 1982 |
| A method for producing a synthetic CO.sub.2 acceptor by feeding a mixture of finely divided silica and at least one finely divided calcium compound selected from the group consisting of calcium oxide and calcium carbonate to a fluidized bed; operating the fluidized bed at suitable condit |
| 4261809 |
Method for removing acid gases from a gaseous stream |
April 14, 1981 |
| In a process for hydrocracking a heavy aromatic polynuclear carbonaceous feedstock containing reactive alkaline constituents to produce liquid hydrocarbon fuels boiling below about 475.degree. C. at atmospheric pressure by contacting the feedstock with hydrogen in the presence of a m |
| 4248669 |
Process for making metallurgical coke using fluidizer char |
February 3, 1981 |
| The present invention is an improvement in the known process of making a coking feedstock from non-caking or weakly caking coals for slot-type coke ovens wherein the coal is subjected to solvent extraction; and at least the non-distillable extract in the effluent slurry product, after re |
| 4247385 |
Method for hydrocracking a heavy polynuclear hydrocarbonaceous feedstock in the presence of a mo |
January 27, 1981 |
| A method for hydrocracking a heavy polynuclear hydrocarbonaceous feedstock to produce lighter hydrocarbon fuels by contacting the feedstock with hydrogen in the presence of a molten metal halide catalyst, the method comprising: mixing the feedstock with a heavy naphtha fraction which has |
| 4208395 |
Removal of sulfur dioxide from flue gas |
June 17, 1980 |
| An improvement is provided in the regeneration system of aqueous regenerative processes for the removal of SO.sub.2 from SO.sub.2 -containing gas streams which have a scrubbing system containing (1) a scrubbing zone through which a recirculating stream of sodium or potassium thiosulf |
| 4201655 |
Process for making metallurgical coke |
May 6, 1980 |
| An improved process for making metallurgical coke is provided as follows. An effluent slurry consisting essentially of coal extract, solvent and undissolved coal is obtained from the liquefaction of coal by solvent extraction. Solvent is removed from the slurry by distillation to produce |
| 4191538 |
Synthetic CO.sub.2 acceptor and gasification process therewith |
March 4, 1980 |
| A synthetic CO.sub.2 acceptor comprising at least one compound selected from the group consisting of calcium oxide and calcium carbonate supported in a refractory carrier matrix of the general formula 3CaO(SiO.sub.2).sub.x (Al.sub.2 O.sub.3).sub.1-x wherein x is from about 0 to about |
| 4163776 |
Process for stack gas desulfurization |
August 7, 1979 |
| A method for desulfurizing a gaseous mixture such as flue gas by sequentially contacting the gaseous mixture with an aqueous solution containing ammonium thiosulfate in a first zone; an aqueous solution containing ammonia and ammonium thiosulfate in a second zone; and an aqueous solu |
| 4162963 |
Method for producing hydrocarbon fuels and fuel gas from heavy polynuclear hydrocarbons by the u |
July 31, 1979 |
| In a process for hydrocracking heavy polynuclear carbonaceous feedstocks to produce lighter hydrocarbon fuels by contacting the heavy feedstocks with hydrogen in the presence of a molten metal halide catalyst in a hydrocracking zone, thereafter separating at least a major portion of the |
| 4138224 |
Production of fixed bed gasifier feedstock and fuels from coal |
February 6, 1979 |
| A two-step process for the production of fixed bed gasifier feedstock from a coal liquefaction effluent slurry is provided which comprises (a) treating a coal liquefaction effluent slurry in a stirred vessel with a mixture of anti-solvent and coal-derived carbonaceous solids to form |
| 4138223 |
Manufacture of pellets from coal liquefaction products |
February 6, 1979 |
| The effluent slurry product from a coal liquefaction reactor is split into two streams. The first stream is subjected to vacuum distillation to produce a vacuum bottoms. The second stream is mixed with particulate char to form a solids-enriched slurry feedstock to a low temperature c |
| 4138222 |
Pelletization of coal conversion products |
February 6, 1979 |
| Pelletization of a pumpable non-distillable conversion product of coal is effected by agglomerating, in a pelletization zone, a mixture of such product with finely divided coaly solids and recycled undersized pellets from solvent extract and pellet classification zones. |
| 4138221 |
Manufacture of pellets from coal conversion products |
February 6, 1979 |
| The manufacture of pellets from pumpable non-distillable coal conversion products is accomplished as follows. The non-distillable product is split into two streams. A pelletizable composition is made from a mixture of one stream with char made from the other stream. The pelletizable comp |
| 4137298 |
Production of a hydrogen-rich gas from a hydrogen, carbon monoxide and carbon dioxide-containing |
January 30, 1979 |
| In a process for the production of hydrogen-rich gas from a gas containing hydrogen, carbon monoxide, carbon dioxide and other components by contacting the gas in a formate synthesis zone with an aqueous solution containing alkali metal carbonate and/or bicarbonate under conditions e |
| 4134826 |
Method for producing hydrocarbon fuels from heavy polynuclear hydrocarbons by use of molten meta |
January 16, 1979 |
| In a process for hydrocracking heavy polynuclear carbonaceous feedstocks to produce lighter hydrocarbon fuels by contacting the heavy feedstocks with hydrogen in the presence of a molten metal halide catalyst, thereafter separating at least a substantial portion of the carbonaceous mater |
| 4134821 |
Maintenance of solvent balance in coal liquefaction process |
January 16, 1979 |
| A coal liquefaction process is provided in which a solvent is used to at least partially liquefy the coal. The process is maintained in solvent balance without extraneous addition of make-up solvent. The required balance is effected by selectively recovering from the liquefaction pro |
| 4094766 |
Coal liquefaction product deashing process |
June 13, 1978 |
| Liquefaction of coal is effected by extraction of coal by a distillable solvent in the presence of hydrogen under conditions selected to produce a coal liquefaction product, the major portion of which is distillable. The effluent slurry product is vacuum distilled to recover the distilla |
| 4081400 |
Regeneration of zinc halide catalyst used in the hydrocracking of polynuclear hydrocarbons |
March 28, 1978 |
| Improved recovery of spent molten zinc halide hydro-cracking catalyst is achieved in the oxidative vapor phase regeneration thereof by selective treatment of the zinc oxide carried over by the effluent vapors from the regeneration zone with hydrogen halide gas under conditions favoring t |
